A cylindrical bar magnet is rotated about its axis (Figure). A wire is connect from the axis and is made to touch the cylindrical surface through a contact. Then A. a direct current is flows in the ammeter AB. no current flows through the ammeter AC. an alternating sunusoidal current flows through the ammeter A with a time period `T = 2 pi//omega`D. a time varying non-sinosoidal current flows through the ammeter A

A cylindrical bar magnet is rotated about its axis (Figure). A wire is

1.	A cylindrical bar magnet is rotated about its axis (Figure). A wire is connect from the axis and is made to touch the cylindrical surface through a contact. Then A. a direct current is flows in the ammeter AB. no current flows through the ammeter AC. an alternating sunusoidal current flows through the ammeter A with a time period `T = 2 pi//omega`D. a time varying non-sinosoidal current flows through the ammeter A
Answer» Correct Answer - B As there is no change in magnetic flux associated with the circuit, no current is induced in the circuit. The ammeter A shows no deflection. Choice (b) is correct.

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